Prof. Chen Changlun and collaborators at the Hefei Institutes of Physical Science in China have developed innovative cobalt-doped nickel hydroxide bipolar electrodes and non-noble metal catalysts, enhancing the efficiency and stability of two-step water electrolysis for hydrogen production. This development addresses challenges faced by traditional alkaline electrolyzers, offering improved efficiency and stability by separating hydrogen and oxygen production using a bipolar electrode. The key advancements include cobalt-doped nickel hydroxide electrodes fabricated on carbon cloth, non-noble metal catalysts like molybdenum-doped nickel-cobalt phosphide, and plasma-induced iron composite cobalt oxide bifunctional electrodes. These advancements enable synchronized hydrogen and oxygen production at different times and locations, resulting in high energy conversion efficiency. The use of non-thermal plasma technology in electrode fabrication has led to significant improvements in the capacity, conductivity, and stability of electrodes. This research marks a crucial step towards industrial-scale hydrogen production, with potential applications in areas such as 5G base stations and data centers.